<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>homepage</title>
    <link rel="stylesheet" href="./lib/layui/css/layui.css">
    <link rel="stylesheet" href="./styles/main.css">
</head>
<body>
    <header>
        <span class="placeholder"></span>
        <a id="sign-out" href="./login.html">退出</a>
    </header>
    <div class="main">
        <nav>
            <ul class="layui-nav layui-nav-tree" lay-filter="test"></ul>
        </nav>
        <div class="container">
            <iframe src="./homepage.html" frameborder="0"></iframe>
        </div>
    </div>

    <script src="./lib/jquery.min.js"></script>
    <script src="./lib/layui/layui.js"></script>
    <script src="./js/main.js"></script>
</body>
</html>